Sewing-machine shuttle



Feb. 17, 1925.

L E. WEAVER SEWING MACHINE SHUTTLE Filed Dec. 5, 1923 I 'fzae'z 07 veneering disk.

Patented Feb. 17, 1925,

UNITED STATES PATENT OFFICE.

LUCIUS E. WEAVER, OF EAST HAMPTON, CONNECTICUT, ASSIGNOR T0 SUMMIT THREAD COMPANY, OF EAST HAMPTON, CONNECTICUT, A CORPORATION OF MAINE.

SEWING-MACHIN E SHUTTLE.

To all whom it may concern: Be it known that I, LUCIUS E. WEAVER, a citizen of the United States, residing at East Hampton, in the county of Middlesex and State of Connecticut, have invented new and useful Improvements in Sewing- Machine Shuttles, of which the following is a specification.

This invention relates to a shuttle which includes a body movable in a shuttle race, and a bobbin case separably engaged with the body, the case being closed at one end by a head and having a tubular post, which receives a bearing post on the body when the parts are assembled.

A bobbin usually of the ready-wound variety, is enclosed in the case betweenthe head thereof and a portion of the body.

A shuttle embodying the invention is characterized by the improved means, hereinafter described and claimed, for preventing undesirably free rotation of the bobbin,

and for partly ejecting the same, or a cop showing a portion of the body, a portion of the bearing post and the end-thrust supporting disk before the latter is rigidly secured to the bearing post.

Figure 5 is a view similar to Figure 4, showing the end-thrust-supporting disk rigidly attached to the bearing post, and a tooladapted to cause such attachment.

Figure 6 is a sectional view, showing assembled the shuttle body as in Figure 2, and the bobbin case and its contents.

Figure 7 is an enlarged sectional View, showing the bobbin case and the veneering disk hereinafter described, the locking means being omitted. v

Figure 8 is a perspective View of the Figure 9 is a perspective view of the frictional bobbin pressing member hereinafter described.

Figure 10 is a perspective view of the stop sleeve hereinafter described.

Figure 11 is a sectional view, showing the bobbin case, its contents or adjuncts shown by Figures 8, 9, and 10, and a bobbin partly projected from the case, the locking means being omitted.

The same reference characters indicate the same parts in all the figures.

In the drawings, 12 designates a shuttle body, which may be of any suitable form, and is provided with a bearing post 13, and with a bobbin-case receiving space through which said post extends. There is nothing new with me in the shuttle body and its post, so that the partial representation thereof in Figures 1, 2 and 6 is considered suflicient for the purposes of this specification.

The bobbin case is composed, as usual, of an annular wall or curb 14, open at one end and closed at the opposite end by a head 15. supporting and surrounding the inner end of a central tubular post 16, which is formed to receive the body post 13. The head and the body post may be provided with any suitable means, adapted to releasably confine the bobbin case on the inner post. Said means may include a sliding latch 17 shown in section, adapted to engage a groove 18. in the body post, the latter projecting through an opening in the head, the latch springing as usual, into the groove, to conline the case, and being displaceable to release the case. i

In carrying out my invention, I combine with the shuttle body and bobbin case, the series of members next described, adapted to cooperate with a bobbin of the readywound type, such as that shown by Figures 6 and 11. Said bobbin may comprise a core or cop tube 19, usually of paper, and a winding 20 of thread, universally wound on the tube.

The bearing post 13 is provided, as usual, in shuttles of this type, with an annular enlargement 21, surrounding the base of the post. I utilize this enlargement as an element of means for rigidly seeming to the post a thrust bearing-supporting disk 22,

adapted to bear on the outer end of the bobbin and support the thrust exerted thereon, by pigessing means within the ,--bobbin largement 21, so that when a swaging tool 25, formed as shown byFigure 5, is'driven against the disk, the latteris toroed fro n the position shown by Figure 4;, to that shown --by Figure-5.. The flange is thus ig tlyi pq t eenla s ment, s t at the disk is rigidly secured to tl 1e;post.;13.-

Interposed betweenthe .case head 15; and

the space occu-piedeby the ,bobbin isa fries tiona'l, member; acl apted-;-to press the outer end of the bobbinagainst theeend thrust-i; supporting disk Said memben compris -a irres ina i k 265 of n" res lient 1 theportion 12 of thesjhuttlebody; Theidisk sheet metal, such as steel adaptedto bear on, the inner end of-the bobbin and 1 having a central opening- 263 -;loosely: receiv;ing the;

tubular post,-;.;- 311C133, plurality ,Of resilient tongues 27} integral l vwith ,the press ng disk and inclinedwfrom-the inner surtace thereot; toicooperatewiththe case head. in y1eld;--

inglyv ipFQSSlllgYhhB: pressing. disk against the bobbin and the bobbin; against, the end rustzsun-no ting 7 disk- 22.

The ldiametenofth e pressing disk is so; nearly :equalitjo the internal; diameter iofthe case, that it prevents the possibility of loose coils ofthreadnunwoundi from the-L bobbin P 568, renders such direct contact :obj ection's able,, because of, :liabilityof the :tongues to engagethe edges 0f the. slots, and thusprew vent thewfreeNrOtabiQn of thepressinglplate with the bobbin. 7 Ithere fore pre fer ably-provlde-sa ismoothasuritaced annular veneeringidisk-29 which contactsnwith;theeinnersside Of tllfitCfiSQallQillCl z andglcoversithe,.slotse28 as shown by Figure 7, the tongues-i27r'vcontaeting ,with theeveneering 1disk,.- as shown by ilil ewll, andlbeing veli'dableethereon.f

Thetu ulari postr- 16 is: provided-,- as here-H tot'or ,with a split A resilient; stop; sleeve 30,

s-12kg o iwi ding y -;emb.rao,eithe postand be a ustablywseeured thereon=-byfrietion The,;,1nner end; ofqthe; stop-sleeye abuts gainst themes sin isk 26; and arreststheoutward movement thereof by .theitongues 27:,ethe arrangement being such thatthepressing; disk may be moved putward, sufficiently QeP 'Q] e ti nee nd 5 lot th bobbin ifrom'ithe case, as show-11;; by ,F igure; 11;, so; that the It is obvious that the end thrust-supporting disk 22 may be employed with other pressin-g ,means a for, exerting outwand pressureron vthe bobbin, and thatwsaidg disk may be slightly dished as shown, or flat, accordgt itheif rm o t e bQbb nend -i hfidisk 214 11 b idly .s redt 6,1 9.51 the shuttle body by other means,th e 1 neans shown.beingpreferred, because of its simplicity, and the fact that it includes the etell-pos ienl r-gemenw The bobbin pressing means comprising the pressing disk 26 andresil-ient tongues 27,- s ext e ely e mpe mn occ pies-les than one-halt vofthespace required by the volute spring which has been heretofore interposed between the icase head and the bobbing-con taining space in'the: case. The action of said,- pressing meansis very .quick and sensitive It may be employed in conjunction with V othenendthrust-supporting means, suchnas 22. is preferred,v however, because it presents a largeiarea ,ofwbearingcsur face unifor-mlyc. distributed as around itheepost, Thel shuttle a body; shownwby the drawings is: that ofthe well known S. C. B. shuttle; ItoiS obviousthat the adjunct may: be reversedfrom the position shown by -Figure ,.-6,: so that ithe' pressing .disk "26. bears on the. head 15, and

the veneer-ing' disk; 29 bears on ,the adjacent ,end faceiof-the bobbin. the veneeri'ng :disk% preventing ,contact I of the.- tongues-withcthe.

relatively rough and yielding end ,face-ofthe.

bobbin.

The bobbin-pressing disk 26 and its resili ent fingers: may i be used sin nearly every shuttle which is commonly provided with;

a "volute' 18D ring exerting (outward pressure on the bobbin. Said diski'inot onlyprevents,

theepossibility of "coi'lsm of thread :being caught in the shuttle lca se. as-oaboize stated, i

but also presents aflatouter surface. entirely covering the inner end of the bobbim. and:

, pressing uniformly against all parts of said end by-e the. spring tongues. The tongues: I

27 A may be foreedibackrinto .the 4slotsf27s,-

tor-medlin-lthei disk by. the .;operation of forming theit'ongues so that when .the tongues aresfully compressed, the thickness Jofcthel.

bobbin-pressing member .is; practieallyl no I greater than that ofethe sheet metal from" which-zit is formed-.

,I'claim:

lnacombination, a shuttle comprising aebobbini. in the 1 cavity isxrotatable, a thrust support fonthe bobbin .at the opposite end "of within-the cavity-when: the bobbin bears ;on s i i the thrust support, and.abobbinscontrollin fl, 9b e: m yw ee reniently remoyed when; aseiiseemeredeiromithe shuttle body adjunct interposedvbetweenisaid faces,, an

.a head forming. one end :of a bobbin-receiving cavity,=a central. post; 111 said cavity, on which ing disk surrounding the post and. bearing on one of said faces, an annular pressing disk of thin resilient sheet metal surrounding the post and bearing on the other of said faces, and a plurality of resilient tongues integral With the pressing disk and inclined from one of the sides thereof to bear on the veneering disk and maintain the two disks yieldingly spaced apart, the

tongues being tensioned by the bobbin when the shuttle is in use, and acting to press the bobbin against the thrust support.

In testimony whereof I have affixed my signature.

LUCIUS E. WEAVER. 

